currently in napa it's 63 degrees. by tomorrow morning, napa could easily get down to 35 or 38 degrees. look for frost in the morning hours. it'll be a warmer day tomorrow. i'll get back here at 10:35, the specific forecast high for your city and the details for that warming trend in the five day forecast. we'll see you back here. >> working bolts on the bay bridge. coming up in three minutes revealing new information tonight about tests that could have detected >>> water service is just beginning to return to several customers after a water main broke around 3:00 this afternoon. it happened on lorenzo avenue across from a high school. only seven customers are affected but that includes the school. no word yet on what caused the pipe to break. >>> new questions are being raised tonight about those failed bolts on the new eastern span of the new bridge. caltrans engineers ordered tests back in 2008 that could possibly have revealed the problems. but state documents show the tests were never done after if contractor argu